Perhaps for that reason gas ovens shouldn't be fitted with microprocessor control systems.
Ralph McDiarmid, AScT Compliance Engineering Group Xantrex Technology Inc From: [email protected] [mailto:[email protected]] On Behalf Of Price, Edward Sent: Monday, August 24, 2009 6:34 AM To: [email protected] Subject: RE: [PSES] Ring Of Fire? Cell Phone Turns On Oven - Popcorn II? Andy: I applaud the direction of your thought, but we should modify it a bit by saying "...no reasonable amount of EMI..." You can't expect a household appliance to withstand 200 or 500 V/M, as if it was a military system. OTOH, 3 V/M is far too low. I would suggest that, for safety critical items, perhaps 50 V/M immunity for residential products would be a good level. Gas ovens that turn themselves on, even in the presence of a ridiculously positioned cell phone, shouldn't be acceptable. Ed Price [email protected] WB6WSN NARTE Certified EMC Engineer Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 Military & Avionics EMC Is Our Specialty > -----Original Message----- > From: [email protected] [mailto:[email protected]] On Behalf > Of Andy Clifford > Sent: Monday, August 24, 2009 2:49 AM > To: 'John Woodgate'; [email protected] > Subject: RE: [PSES] Ring Of Fire? Cell Phone Turns On Oven - > Popcorn II? > > Seems to me a bad control system design - no amount of EMI > should turn an oven on - this is basic fault tolerance philosophy. > > > Andy Clifford > > Conformance Ltd - Product safety, approvals and CE-marking > consultants The Old Methodist Chapel, Great Hucklow, Buxton, > SK17 8RG England Tel. +44 1298 873800, Fax. +44 1298 873801, > www.conformance.co.uk Registered in England, Company No. 3478646 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
